Strategies:

Dividing in Parts
Break up and Bridge
Multiplying by 0.1, 0.01, 0.001, 0.0001
Dividing by 0.1, 0.01, 0.001
The elevens strategy
Making compatible numbers
Multiplying a fraction by a whole number
Double and Halve
Finding the Percent of a number
Multiplying by powers of 10
Dividing by 10, 100, 1000, etc.
The Teens Strategy
The 25's Strategy
Subtracting from the left.
Dividing by Balancing
Making Compatible Factors and Finding Compatible Factors
Applying the above strategies to integers
Subtracting fractions from whole numbers.
Adding Fractions

Mental Math Outcomes to know

Old Tests to use as practice